Issues with your game:

-Nothing to play for as a casual player

-Sound occulusion is awful

-Combat Zone needs to be removed (or reworked from 0, something like blitz mode with max 30 players maybe)

-Bullets to slow (maybe speed up by 10%?)

-Tune the exponential curve of the bulletdrop drag to be flater (means more drop at mid range but less at distance but still maintain the drag functionality)

-Bring back the mechanic where you couldnt shoot when you where to close standing to a object like cars (dont apply to the shotgun, it was annoying in shotgun fights back then)

-Remove the player collision (it feels like players are stuck to eachother in shotgun fights)

-Tune the pallet spread of the shotgun (its to tight so it deals inconstant damage when you hit different parts of the body)

-Tune the camera (it feels like the playermodel is standing to far to the left (but only when holding any item in hand))